KR920018739A - Apparatus and method for noise reduction during slow or search in video tape recorders - Google Patents

Apparatus and method for noise reduction during slow or search in video tape recorders Download PDF

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Publication number
KR920018739A
KR920018739A KR1019910005096A KR910005096A KR920018739A KR 920018739 A KR920018739 A KR 920018739A KR 1019910005096 A KR1019910005096 A KR 1019910005096A KR 910005096 A KR910005096 A KR 910005096A KR 920018739 A KR920018739 A KR 920018739A
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KR
South Korea
Prior art keywords
address
mode
slow
signal
search
Prior art date
Application number
KR1019910005096A
Other languages
Korean (ko)
Other versions
KR100221067B1 (en
Inventor
박찬영
김계종
Original Assignee
강진구
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910005096A priority Critical patent/KR100221067B1/en
Priority to US07/820,072 priority patent/US5359462A/en
Priority to JP4026373A priority patent/JPH0591477A/en
Publication of KR920018739A publication Critical patent/KR920018739A/en
Application granted granted Critical
Publication of KR100221067B1 publication Critical patent/KR100221067B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
    • G11B27/324—Duty cycle modulation of control pulses, e.g. VHS-CTL-coding systems, RAPID-time code, VASS- or VISS-cue signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/125—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams conditioned by the operating function of the apparatus
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G11B2220/91—Helical scan format, wherein tracks are slightly tilted with respect to tape direction, e.g. VHS, DAT, DVC, AIT or exabyte
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
    • H04N5/7826—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
    • H04N5/78263—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape for recording on tracks inclined relative to the direction of movement of the tape

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Television Signal Processing For Recording (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

내용 없음No content

Description

비디오 테이프 레코더에서 슬로우 또는 서치시 노이즈 제거장치 및 방법Apparatus and method for noise reduction during slow or search in video tape recorders

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명에 따른 어드레스 배치도,5 is an address arrangement diagram according to the present invention;

제6도는 본 발명에 따른 시스템도,6 is a system diagram according to the present invention;

제7도는 본 발명에 따른 슬로우 동작시 메모리의 리드/라이트 형태도.7 is a read / write form of a memory in a slow operation according to the present invention.

Claims (2)

VTR테이프의 제어트랙에 테이프의 위치를 알수 있는 어드레스를 기록하되 동일한 어드레스블럭 다수개를 하나의 어드레스로 하여 기록하고 그를 헤드를 독출하여 슬로우모드와 서치모드를 수행하는 슬로우 및 서치 방법에 있어서, 동일한 블록을 가지지 않는 단일의 블럭만을 한 어드레스로 기록하여 상기 VTR테이프상의 어드레스 정도를 향상시켜 기록하고, 이를 이용 슬로우 모드 또는 서치 모드로 동작시킬시 그 모드에 상기 기록한 어드레스를 상기 헤드가 소정회씩 건너뛰어 정지한후 그때마다 정확하게 트랙킹하여 화상데이타를 읽은뒤, 소정메모리에 그를 기록한후 상기 소정화씩 건너뛰는 동안 반복하여 재생하므로써, 슬로우 모드와 고속서치 모드에서 노이즈를 제거하는 슬로우 모드와 고속 서치모드의 동작을 수행하는 비디오 테이프 레코더에서 슬로우 또는 서치시의 노이즈 제거 방법.In the slow and search method of recording the address where the position of the tape is known on the control track of the VTR tape, and recording the same address block as one address and reading the head to perform the slow mode and the search mode. Only a single block having no block is written to one address to improve the address on the VTR tape, and the recording is performed. When operating in the slow mode or the search mode, the head skips the recorded address at predetermined times. After slowing down, accurately track the image data at that time, read the image data, and record it in a predetermined memory, and then repeatedly play it while skipping the predetermined images, so that the slow mode and the fast search mode remove noise in the slow mode and the fast search mode. Video tape recorder performing the action How to remove noise during slow or search VTR테이프상의 기록된 화상신호를 재생함에 있어 슬로우모드와 고속 서치모드에서 노이즈를 제거하기 위한 장치에 있어서, 테이프로부터 상기 어드레스신호와 화상신호를 기록/재생할 수 있는 헤드(HD)와, 상기 헤드에서 재생한 미세한 신호를 전치증폭하는 전치증폭기(20)와, 상기 전치증폭기(20)의 증폭한 신호를 받아 디지탈 소정 메모리(50)와, 상기 A/D변환기(30)부터 데이타가 공급되면 그를 받아 상기 메모리(50)에 기록하고 상기 A/D변환기(30)로부터 데이타가 공급되지 않을시 상기 메모리(50)에 기록한 데이터를 독출하여 출력하는 트릭플레이 제어기(40)와, 상기 트릭플레이 제어기(40)의 출력을 받아 디지털신호로 변환하여 재생신호로 출력하는 D/A변환기(60)로 구성함을 특징으로 하는 비디오 테이프 레코더에서 슬로우 또는 서치시의 노이즈 제거 장치.An apparatus for removing noise in a slow mode and a fast search mode in reproducing a recorded image signal on a VTR tape, comprising: a head (HD) capable of recording / reproducing the address signal and image signal from a tape, and The preamplifier 20 pre-amplifies the reproduced minute signal, the amplified signal of the preamplifier 20 is received, and the data is supplied from the digital predetermined memory 50 and the A / D converter 30. A trick play controller 40 for writing to the memory 50 and reading and outputting data written to the memory 50 when data is not supplied from the A / D converter 30; and the trick play controller 40 And a D / A converter (60) for converting a digital signal into a digital signal and outputting it as a reproduction signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910005096A 1991-03-30 1991-03-30 Apparatus and method for removing noise at slow or search mode in a vtr KR100221067B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019910005096A KR100221067B1 (en) 1991-03-30 1991-03-30 Apparatus and method for removing noise at slow or search mode in a vtr
US07/820,072 US5359462A (en) 1991-03-30 1992-01-13 Device for eliminating noises during slow and high speed search operation in a video tape recorder and method therefor
JP4026373A JPH0591477A (en) 1991-03-30 1992-02-13 Method and apparatus for speed change and regeneration of video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910005096A KR100221067B1 (en) 1991-03-30 1991-03-30 Apparatus and method for removing noise at slow or search mode in a vtr

Publications (2)

Publication Number Publication Date
KR920018739A true KR920018739A (en) 1992-10-22
KR100221067B1 KR100221067B1 (en) 1999-09-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910005096A KR100221067B1 (en) 1991-03-30 1991-03-30 Apparatus and method for removing noise at slow or search mode in a vtr

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Country Link
US (1) US5359462A (en)
JP (1) JPH0591477A (en)
KR (1) KR100221067B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69319478T2 (en) * 1992-03-30 1998-12-10 Hitachi, Ltd., Tokio/Tokyo Magnetic recording / reproducing apparatus
JP3290512B2 (en) * 1992-08-24 2002-06-10 三菱電機株式会社 Magnetic recording / reproducing device
JPH0969276A (en) * 1995-08-29 1997-03-11 Sony Corp Searching method
CN1090786C (en) * 1996-04-16 2002-09-11 三星电子株式会社 Device and method for eliminating interference stripe

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132073A (en) * 1980-03-21 1981-10-16 Victor Co Of Japan Ltd Reproducing device for disc-form information recording medium
JPS61182383A (en) * 1985-02-08 1986-08-15 Toshiba Corp Slow reproduction device of video tape recorder
JPS61208381A (en) * 1985-03-13 1986-09-16 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPH0795390B2 (en) * 1985-08-07 1995-10-11 株式会社日立製作所 Control signal recording device for magnetic recording / reproducing device
JPH07123299B2 (en) * 1985-10-18 1995-12-25 株式会社東芝 Video tape recorder playback device
JPS62234478A (en) * 1986-04-04 1987-10-14 Matsushita Electric Ind Co Ltd Video signal recording and reproducing device
JPH07105933B2 (en) * 1986-05-12 1995-11-13 株式会社日立製作所 Magnetic recording / reproducing device
JPH07122944B2 (en) * 1986-11-06 1995-12-25 キヤノン株式会社 Tracking control system
JPH01135279A (en) * 1987-11-20 1989-05-26 Sony Corp Magnetic recording and reproducing device
JP2856737B2 (en) * 1988-01-11 1999-02-10 株式会社東芝 Recording and playback device
JPH02260777A (en) * 1989-03-30 1990-10-23 Victor Co Of Japan Ltd Magnetic recording and reproducing device

Also Published As

Publication number Publication date
US5359462A (en) 1994-10-25
KR100221067B1 (en) 1999-09-15
JPH0591477A (en) 1993-04-09

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